2031 Astronomy Calendar

View major astronomical events in 2031, including meteor showers, eclipses, lunar phases, planetary oppositions, and notable skywatching dates.

Geomagnetic Activity and Aurora Index

Taiwan and Hong Kong are normally far too low in geomagnetic latitude for aurora. Even Hokkaido generally needs an extreme Kp≥8 storm for a chance of low-latitude aurora. Use this mainly for overseas aurora and photography planning.

Aurora Forecast · Source: NOAA Space Weather Prediction Center

Month 1

2031-01-03 · Meteor Shower — Quadrantids (ZHR≈120) · Nominal annual baseline (date and ZHR await the annual forecast) View observing information · Source 1

Major moon phases — Full Moon 2031-01-09 · Last Quarter 2031-01-16 · New Moon 2031-01-23 · First Quarter 2031-01-30 View observing information

Month 2

Major moon phases — Full Moon 2031-02-07 · Last Quarter 2031-02-15 · New Moon 2031-02-21 View observing information

Month 3

2031-03-21 · Equinox — Vernal Equinox · Reviewed year-specific source Source 1
2031-03-26 · Planetary retrograde — Mercury retrograde: first station Learn how it forms
2031-03-29 · Planetary retrograde — Mars retrograde: first station Learn how it forms

Major moon phases — First Quarter 2031-03-01 · Full Moon 2031-03-09 · Last Quarter 2031-03-16 · New Moon 2031-03-23 · First Quarter 2031-03-31 View observing information

Month 4

2031-04-15 · Planetary retrograde — Jupiter retrograde: first station Learn how it forms
2031-04-22 · Meteor Shower — Lyrids (ZHR≈20) · Nominal annual baseline (date and ZHR await the annual forecast) View observing information · Source 1

Major moon phases — Full Moon 2031-04-08 · Last Quarter 2031-04-14 · New Moon 2031-04-22 · First Quarter 2031-04-30 View observing information

Month 5

2031-05-04 · Planetary opposition — Mars at opposition Learn how it forms
2031-05-06 · Meteor Shower — Eta Aquariids (ZHR≈50) · Nominal annual baseline (date and ZHR await the annual forecast) View observing information · Source 1
2031-05-07 · Eclipse — Penumbral Lunar Eclipse · Taiwan: not visible View observing information · Learn how it forms · Source 1 · Source 2
2031-05-21 · Eclipse — Annular Solar Eclipse · Taiwan: visible View observing information · Learn how it forms · Source 1 · Source 2

Major moon phases — Full Moon 2031-05-07 · Last Quarter 2031-05-14 · New Moon 2031-05-21 · First Quarter 2031-05-29 View observing information

Month 6

2031-06-05 · Eclipse — Penumbral Lunar Eclipse · Taiwan: visible View observing information · Learn how it forms · Source 1 · Source 2
2031-06-15 · Planetary opposition — Jupiter at opposition Learn how it forms
2031-06-21 · Solstice — Summer Solstice · Reviewed year-specific source Source 1

Major moon phases — Full Moon 2031-06-05 · Last Quarter 2031-06-12 · New Moon 2031-06-20 · First Quarter 2031-06-28 View observing information

Month 7

2031-07-19 · Planetary retrograde — Neptune retrograde: first station Learn how it forms
2031-07-21 · Planetary retrograde — Venus retrograde: first station Learn how it forms
2031-07-28 · Meteor Shower — Delta Aquariids (ZHR≈25) · Nominal annual baseline (date and ZHR await the annual forecast) View observing information · Source 1
2031-07-29 · Planetary retrograde — Mercury retrograde: first station Learn how it forms

Major moon phases — Full Moon 2031-07-05 · Last Quarter 2031-07-11 · New Moon 2031-07-19 · First Quarter 2031-07-27 View observing information

Month 8

2031-08-12 · Meteor Shower — Perseids (ZHR≈100) · Nominal annual baseline (date and ZHR await the annual forecast) View observing information · Source 1

Major moon phases — Full Moon 2031-08-03 · Last Quarter 2031-08-10 · New Moon 2031-08-18 · First Quarter 2031-08-26 View observing information

Month 9

2031-09-23 · Equinox — Autumnal Equinox · Reviewed year-specific source Source 1

Major moon phases — Full Moon 2031-09-01 · Last Quarter 2031-09-09 · New Moon 2031-09-17 · First Quarter 2031-09-24 View observing information

Month 10

2031-10-03 · Planetary retrograde — Uranus retrograde: first station Learn how it forms
2031-10-05 · Planetary retrograde — Saturn retrograde: first station Learn how it forms
2031-10-08 · Planetary opposition — Neptune at opposition Learn how it forms
2031-10-21 · Meteor Shower — Orionids (ZHR≈20) · Nominal annual baseline (date and ZHR await the annual forecast) View observing information · Source 1
2031-10-30 · Eclipse — Penumbral Lunar Eclipse · Taiwan: visible View observing information · Learn how it forms · Source 1 · Source 2

Major moon phases — Full Moon 2031-10-01 · Last Quarter 2031-10-08 · New Moon 2031-10-16 · First Quarter 2031-10-23 · Full Moon 2031-10-30 View observing information

Month 11

2031-11-14 · Eclipse — Hybrid Solar Eclipse · Taiwan: not visible View observing information · Learn how it forms · Source 1 · Source 2
2031-11-17 · Meteor Shower — Leonids (ZHR≈15) · Nominal annual baseline (date and ZHR await the annual forecast) View observing information · Source 1
2031-11-20 · Planetary retrograde — Mercury retrograde: first station Learn how it forms

Major moon phases — Last Quarter 2031-11-07 · New Moon 2031-11-15 · First Quarter 2031-11-21 · Full Moon 2031-11-29 View observing information

Month 12

2031-12-12 · Planetary opposition — Saturn at opposition Learn how it forms
2031-12-13 · Meteor Shower — Geminids (ZHR≈150) · Nominal annual baseline (date and ZHR await the annual forecast) View observing information · Source 1
2031-12-17 · Planetary opposition — Uranus at opposition Learn how it forms
2031-12-22 · Meteor Shower — Ursids (ZHR≈10) · Nominal annual baseline (date and ZHR await the annual forecast) View observing information · Source 1
2031-12-22 · Solstice — Winter Solstice · Reviewed year-specific source Source 1

Major moon phases — Last Quarter 2031-12-07 · New Moon 2031-12-14 · First Quarter 2031-12-21 · Full Moon 2031-12-29 View observing information

2030 · 2032

Related tools: Moon Phases · Tide Forecast · Go Timing